Dynamic intervertebral implant

摘要

The implant includes two side walls resting against the vertebral end-plates and an intermediate wall joining the supporting walls. The implant can be deformed for insertion between the vertebrae to be treated to restore the attenuated mobility of the vertebrae, and includes mounting elements mounting on the vertebrae. The side walls have a curved shape, whose convexity is oriented towards the outside of the implant; the intermediate wall has a curved shape, whose convexity is oriented towards the outside of the implant such that it does not form any pronounced angles with the supporting side walls. The supporting side walls and the intermediate wall, have a partially oval shape; and the mounting elements are configured such that the implant can be mounted on the vertebrae.

主权项

1. An intervertebral cervical implant for treating cervical vertebrae, comprising:
a first bearing wall having a domed surface along its length with a convexity towards the exterior of the implant for matching a shape and bearing against a face of a vertebral endplate of one of the cervical vertebrae; a second bearing wall having a domed surface along its length with a convexity towards the exterior of the implant for matching a shape and bearing against a face of an adjacent vertebral endplate of another of the cervical vertebrae; and an intermediate wall connecting the first bearing wall to the second bearing wall such that the first and second bearing walls are substantially parallel to one another and are spaced apart from one another, the first and second bearing walls each having a first end connected to the intermediate wall and a free end distant from the intermediate wall, the intervertebral cervical implant being capable of deformation for insertion between the cervical vertebrae; wherein at least one of the first and second bearing walls includes a series of vertebral engaging protrusions extending lengthwise completely across a width of either the first bearing wall or the second bearing wall, the vertebral engaging protrusions being parallel to one another and protruding from the outer convex surface for securing the implant to the cervical vertebrae.